马光磊,张玲洁,沈 涛,祁更新,杨辉,陈 晓,樊先平.Ag/SnO2电接触材料的制备及其燃弧特性研究[J].稀有金属材料与工程,2020,49(4):1312~1324.[Ma Guanglei,Zhang Lingjie,Shen Tao,Qi Gengxin,Yanghui,Chen Xiao,Fan xianping.Research on Preparation and Arcing Characteristics of Ag/SnO2 Electrical Contacts[J].Rare Metal Materials and Engineering,2020,49(4):1312~1324.]
Ag/SnO2电接触材料的制备及其燃弧特性研究
投稿时间:2019-05-14  修订日期:2019-08-09
中文关键词:  电接触材料  Ag/SnO2  燃弧特性  失效退化模式
基金项目:National Natural Science Foundation of China (No. 51801180); Zhejiang Provincial Key Research and Development Program of China (No. 2017C01051)
中文摘要:
      以Ag粉和自制SnO2为原料,采用机械合金化和热挤压拉拔工艺制备Ag/SnO2电接触材料。采用冷压焊工艺设备制备了Ag/SnO2铆钉元件。采用X射线衍射仪(XRD)对Ag粉、自制SnO2及Ag/SnO2复合粉体进行物相分析;采用扫描电子显微镜(SEM)对电寿命测试前后Ag/SnO2铆钉元件的表面形貌进行了表征。并考察了不同电气参数对Ag/SnO2铆钉元件的燃弧特性、电弧侵蚀形貌、质量损失及其失效退化模式等特性研究。结果表明: Ag/SnO2电接触材料在电弧作用下相比于纯Ag表现出更高的燃弧时间和燃弧能量,平均闭合与断开燃弧时间分别为51.78ms 和25.86ms,比纯Ag高出4.87ms 和2.78ms;同理,平均闭合、断开燃弧能量分别为988.14mJ和493.85mJ,比纯Ag高出104.93mJ 和58.76mJ;随着循环循环次数的增加,Ag/SnO2电接触材料的总质量损失为负值,其失效退化模式主要表现为液滴飞溅与SnO2颗粒上浮。
Research on Preparation and Arcing Characteristics of Ag/SnO2 Electrical Contacts
英文关键词:Electrical contact material  Ag/SnO2  Arcing characteristics  Degradation mode
英文摘要:
      By using Ag powder and nano-SnO2 as raw materials , Ag/SnO2 electrical contact materials and its rivets were prepared by mechanical alloying and hot extrusion and cold press-welding process. The phase composition of the commercial Ag powder and as-prepared SnO2 and Ag/SnO2 composite powders was analyzed by X-ray diffractometry (XRD). The surface morphology and arcing characteristics and mass loss of the rivets before and after the electrical life test were characterized by Scanning Electron Microscopy (SEM). Effects of different process parameters (working current and cycle number) on the arcing characteristics, arc eroded morphology, mass loss and degradation mode of Ag/SnO2contacts were analyzed comparedly..The results showed that compared with pure Ag, Ag/SnO2 electrical contacts had higher arcing time and arcing energy under arcing, and the average arcing time of making-arc and breaking-arc was 25.86ms and 51.78ms, which was 2.78ms and 4.87ms higher than that of pure silver, respectively; the average arcing energy of making-arc and breaking-arc was 493.85mJ and 988.14mJ, which was 58.76mJ and 104.93mJ higher than that of pure silver, respectively. As the number of cycle operations increased, the total mass loss of the Ag/SnO2 electrical contacts was negative value, and its main failure degradation modes of droplet splatter and SnO2 particles floating were manifested.
作者单位E-mail
马光磊 浙江大学材料科学与工程学院 632906089@qq.com 
张玲洁 浙江大学材料科学与工程学院  
沈 涛   
祁更新 温州宏丰电工合金有限公司  
杨辉 浙江大学材料科学与工程学院  
陈 晓 温州宏丰电工合金有限公司  
樊先平 浙江大学材料科学与工程学院  
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